# 472 Ruby Street, Brooklyn, NY

Public-record building report from Know Your Building (https://knowyourbuilding.nyc/building/3044710109/472-ruby-street-brooklyn).
BBL 3044710109 · BIN 3389791 · Generated 2026-10-30

## Concern level: high

- 3 open class-C HPD violations (immediately hazardous) — about 1 per 12 apartments
- 2 of those issued in the last 3 years
- 5 open rent-impairing violation(s)

Scale: low, moderate, high, severe. Set from open hazardous violations relative to building size, raised by distress signals (HPD's Alternative Enforcement Program, court harassment findings, evictions, unpaid OATH/ECB fines, open housing-court cases, a sold tax lien). It describes the public record, not any one apartment.

## Rent stabilization

Likely rent-stabilized. The owner registered 36 stabilized units for 2023, of about 36 apartments.
Registered units by year: 2018: 36, 2019: 36, 2020: 36, 2021: 36, 2022: 36, 2023: 36.
Receives the 421-a tax benefit, scheduled to expire around 2029; stabilization tied to 421-a generally ends when the benefit does.
No public data says which specific apartment is stabilized; tenants can request their rent history from NYS Homes and Community Renewal.

## The building

built 2001, 3 floors, 36 residential units.

## HPD housing-maintenance violations

12 open (class C immediately hazardous: 1, class B hazardous: 10, class A non-hazardous: 1); 155 on record.
1 open class-C violations were issued in the last 3 years.
5 open violations are rent-impairing.
This tax lot has 2 buildings; these counts are for this building only.

## DOB building violations

0 active (0 issued in the last 3 years); 0 on record.

## OATH/ECB violations and fines

0 active of 1 on record; 0 decided by default; $0 balance due.

## 311 housing complaints

40 in the last 12 months; 270 on record.
Most common: HEAT/HOT WATER (144), PLUMBING (30), WATER LEAK (24), ELECTRIC (12), UNSANITARY CONDITION (10).

## Bedbugs

16 annual bedbug filings by the owner; latest reports 0 infested units.

## Evictions

0 executed in the last 3 years; 9 on record.

## Housing court (HPD litigation)

5 cases on record, 0 open, 5 tenant-initiated, 0 with a court finding of harassment.

## Landlord

- CorporateOwner: RUBY DUMONT LLC
- Shareholder: ALEX ARKER
- Shareholder: ALLAN ARKER
- SiteManager: Ivo Kello
- HeadOfficer: ROBERT CORSO
- Agent: PROGRESSIVE MANAGEMENT OF NY
- Officer: Ilsoo Kim

The same owner is linked to 100 other buildings (ROBERT CORSO at 1044 NORTHERN BLVD).

## Sources and limits

NYC Open Data (HPD, DOB, OATH/ECB, 311, DOF, PLUTO) and NYS DHCR building lists. This is a screening signal from public records, not legal advice; records lag and contain errors. Full interactive report with violation details and maps: https://knowyourbuilding.nyc/building/3044710109/472-ruby-street-brooklyn